PROBLEM TO BE SOLVED: To provide a novel blood triglyceride level rise inhibitor.SOLUTION: The blood triglyceride level rise inhibitor, namely the inhibitor containing a processed product of barley leaves, has an improved effect of inhibiting the rise of blood triglyceride level compared to the conventional blood triglyceride level rise inhibitor containing dietary fibers. The addition of this blood triglyceride level rise inhibitor to beverages, foods, cosmetics and medicines gives the beverages, foods, cosmetics and medicines having excellent effect of inhibiting the rise in blood triglyceride level.